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Image copyright Climate Vulnerable Forum Over the past three years, climate scientists have shifted the definition of what they believe is the “safe” limit of climate change. For decades, researchers argued the global temperature rise must be kept below 2C by the end of this century to avoid the worst impacts. But scientists now argue […]

Media playback is unsupported on your device Media captionThese chicken nuggets were grown in a lab from cells taken from a living animal There’s a looming crisis over the world’s growing appetite for meat. Could a chicken running around a farmyard in San Francisco hold the key to a solution? In 1931, Winston Churchill predicted […]